Lik`s forum

The first thing to try is to boot into single user mode. This may not work, because your system might be configured to still ask for a root password to get to single user mode.
If that's the case, use another trick that replaces init with /bin/bash.

First, try single user. If you don't see either a LILO or GRUB boot screen, try hitting CTRL-X to get one (also ESC key can be used).

If ...

To view the content of RPM package please use the following syntax:

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rpm -qlp /path/to/file.rpm

It is possible to set the label of a SWAP partition by using the mkswap command with the '-L' option.

Command syntax is:

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mkswap -L <label> <partition>
              Specify a label, to allow swapon by label.

Replace <label> with the label you would like to use. Replace the partition with the SWAP partition. If following is the output of:

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fdisk -l

Disk /dev/sda: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors ...

PECL uploadprogress page

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wget "http://pecl.php.net/get/uploadprogress"
tar xzvf uploadprogress
rm -f uploadprogress
cd uploadprogress*
phpize
./configure
make
make install

If everything is going well, you will see last message as bellow:

Installing shared extensions: /usr/local/lib/php/extensions/no-debug-non-zts-20060613/

Now, locate your PHP configuration file:

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php -i|grep php.ini

And include uploadprogress extention support:

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extension="uploadprogress.so"

Restart webserver and check phpinfo() output. This also can be done from the console:

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php -i|grep -i uploadprogress

or

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php -m

If you want to add additional IPs to the same NIC you should do the following:

1. Adding a network alias from command line in RH or CentOS Linux:

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/sbin/ifconfig lo 127.0.0.1
/sbin/ifconfig eth0 up
/sbin/ifconfig eth0 10.0.0.1
/sbin/ifconfig eth0:1 192.168.0.1
/sbin/ifconfig eth0:2 192.168.0.2

2. Configure a script to setup your network/IP aliases on boot:

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cd /etc/sysconfig/network-scripts/
cp ifcfg-eth0 ifcfg-eth0:1
cp ifcfg-eth0 ifcfg-eth0:2

Then edit ifcfg-eth0:1 and ifcfg-eth0:2 files and add your IP aliases there. ...

The most efficent way to search your history is to hit Ctrl+R and type the start of the command. It will autocomplete as soon as there’s a match to a history entry, then you just hit enter. Pressing ctrl+r many times will search for previous commands.

Create manually required for boot devices:

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mknod -m 660 /mount_point/dev/console c 5 1
mknod -m 660 /mount_point/dev/null c 1 3

Abbreviated as TSO, TCP segmentation offload is used to reduce the CPU overhead of TCP/IP on fast networks. TSO breaks down large groups of data sent over a network into smaller segments that pass through all the network elements between the source and destination. This type of offload relies on the network interface controller (NIC) to segment the data and then add the TCP, IP and data link layer protocol headers to each segment. The ...

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file /boot/initrd-2.6.18-194.8.1.el5.img
#/boot/initrd-2.6.18-194.8.1.el5.img: gzip compressed data, from Unix, last modified: Tue Jul 13 18:30:50 2010, max compression

Rename it to end in .gz and uncompress:

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gzip -d initrd-2.6.18-194.8.1.el5.img.gz
file initrd-2.6.18-194.8.1.el5.img
#initrd-2.6.18-194.8.1.el5.img: ASCII cpio archive (SVR4 with no CRC)

Let's open the compress cpio file:

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mkdir initrd_uncompressed
cd initrd_uncompressed
cpio -dumi < ../initrd-2.6.18-194.8.1.el5.img

To pack modified content back into initrd image do the following:

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find . |cpio -H newc -ov |gzip -c - > ../initrd-2.6.18-194.8.1.el5.img

...

Name
partprobe - inform the OS of partition table changes

Synopsis
partprobe

Description
partprobe is a program that informs the operating system kernel of partition table changes, by requesting that the operating system re-read the partition table.

Options
This program uses short UNIX style options.

-d
Don't update the kernel.
-s
Show a summary of devices and their partitions.
-h
Show summary of options.
-v
Show version of program.